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4870results about "Tunnels" patented technology

Method for exchanging tool of shield machine for tunnel construction

The invention discloses a method for exchanging a tool of a shield machine for tunnel construction, which comprises the steps of: (1) soil cabin replacement filling: performing the process of soil cabin replacement filling by using a spiral excavating machine and a slip casting system synchronously working with the spiral excavating machine; (2) advanced slip casting inside the machine: beating a plurality of slip casting pipes into the soil on the upper part of the shield machine from inner to outer inside the shield machine by respectively passing through a plurality of advanced geologic holes and then synchronously injecting cement paste into the soil on the upper part of the shield machine through the slip casting pipes by using a slip casting device till the cement paste cannot be injected any more; (3) cleaning cabin and exchanging tool synchronously: manually cleaning the cement plaster solidified inside the soil cabin and synchronously exchanging the tool mounted on the shield machine; and (4) getting rid of the difficult position of the shield machine and recovering the process. The method provided by the invention has the advantages of reasonable design, convenience for operation, low cost, high safety factor, good use effect and capable of solving the problem that the tool cannot be exchanged in the traditional tool exchanging mode under severe tool exchanging conditions.
Owner:URBAN RAIL TRANSIT ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD +1

Large diameter tunneling close range down-traversing small diameter subway tunnel distortion control method

The invention discloses a method for controlling distortion for deep large diameter shield tunnels to under-pass small diameter tunnels, which pertains to the technical field of tunnel engineering. According to the method, the control range of the stratum loss ratio of newly established tunnels and the optimum value of the support pressure of the shield cut surface are acquired by using the finite-element method; soil pressure in front of the shield cut surface is kept relatively balanced by setting the optimal value of the support pressure, and the support pressure fluctuation range of the cut surface is controlled to range from minus 10kPa to plus 10kPa; the stratum loss ratio of the newly established tunnels is controlled within the allowed range. According to the construction technique measures, a test propelling area is arranged before the shield reaches a cross position. In the area, construction is carried out according to the situation of the existing underground tunnels above; and construction parameters are controlled and regulated to adjust the support pressure, the propulsive velocity and the amount of the grout to be injected in time; the shield passes through the cross position in combination with the optimal values of the construction parameters of the test propelling area. The invention can not only ensure the construction of tunnels to be carried out safely and smoothly, but also minimize the influence of construction on ambient environment.
Owner:SHANGHAI JIAO TONG UNIV

Track and posture composite control method in shield tunneling process

ActiveCN102102522AEliminate positional deviationEliminate Angle DeviationTunnelsHydraulic cylinderAngular deviation
The invention discloses a track and posture composite control method in a shield tunneling process. The method comprises the following steps of: performing control by setting threshold values for a posture and a track; immediately adjusting the posture as long as the posture deviates to exceed the limit even though the track does not reach a deviation correction threshold; solving current positional deviation Si and angular deviation theta I of a shield machine through measurement and calculation when a shield works; continuously propelling the shield machine when the Si is less than or equal to a positional deviation threshold value Scmin of a track and posture composite controller and theta i is less than or equal to an angular deviation threshold value theta cmin of the track and posture composite controller or when the Si is less than or equal to positional allowable deviation Smin of actual tunnel construction and theta i is equal to 0; contrarily, automatically adjusting propelling pressure of a hydraulic cylinder of each sub-region and propelling displacement to simultaneously eliminate the positional deviation and the angular deviation generated in a tunneling process. Thus, an actual tunneling route of the shield machine is controlled within a design axial range of a tunnel, unnecessary overbreak and underbreak are avoided, and the forming quality of the tunnel is improved.
Owner:ZHEJIANG UNIV

Quick feedback analyzing system in tunnel constructing process

InactiveCN102155231AOvercoming the blindness of pre-designDynamic information construction improvementMining devicesTunnelsEngineeringAlgorithm optimization
The invention discloses a quick feedback analyzing system in a tunnel constructing process. The system adopts a scheme: understanding currently adopted designing construction parameters; establishing a tunnel excavation three-dimensional finite element numerical grid calculation model; acquiring surrounding rock layering and convergent displacement monitoring information after a tunnel is excavated; establishing a non-linear support vector machine model; fixing an anchoring parameter according to the actual construction parameter, and optimally identifying rock mechanic parameters by adoptinga differential optimization algorithm; optimizing the construction parameter of an anchoring scheme by adopting a differential evolution algorithm; and optimizing the rock mechanic parameters by calling the differential evolution and optimization algorithms to further solve the construction parameter of the anchoring scheme, and outputting the construction parameter of the optimized anchoring scheme as a construction scheme through a computer display screen to guide the constructors to construct. The quick feedback analyzing system ensures that the monitoring information is used for optimizing the anchoring parameter while being used for identifying the surrounding rock parameters, so that the dynamic information construction is improved to a level of quantitative analysis.
Owner:DALIAN MARITIME UNIVERSITY

Construction method applicable to intersection between inclined shaft and slant hole of weak surrounding rock tunnel

The invention discloses a construction method applicable to an intersection between an inclined shaft and a slant hole of a weak surrounding rock tunnel, and the method comprises the following steps that (1) the inclined shaft is dug; (2) the arch part of an inclined shaft section is supported; (3) the vertical central line of a face at the intersection between the inclined shaft and the slant hole serves as a boundary, first a slant hole section on one side of the boundary is dug, and sectional digging is adopted on every side; an area which is enclosed by the arch top of the slant hole, the side walls of the slant hole on both sides and the extended surface of the ramp slope surface of the inclined shaft is a I part; an area which is enclosed by the plane of the intersection line of the ramp slope surface on an inclined shaft digging surface, the side walls of the slant hole on both sides and the extended surface of the ramp slope surface of the inclined shaft is a II part; and an area which is enclosed by the plane of the intersection line of the ramp slope surface on the inclined shaft digging surface, the side walls of the slant hole on both sides and the bottom of the slant hole is a III part; the slant hole section on the other side is dug in a sectional way; (4) supporting and reinforcement are carried out; and (5) inverted arch and lining construction are carried out. According to the method, the deformation of surrounding rock is reduced, some temporary supporting steps are saved on the premise of good safety, so that the procedures are simple, the construction cost is reduced, and the construction progress is improved.
Owner:中铁二十三局集团第四工程有限公司 +1

Real-time sensing system and method of tunneling rack mass state of TBM

The invention provides a real-time sensing system and method of the tunneling rack mass state of a TBM. The method and system is used for solving the problem that an adaptive tunneling scheme cannot be selected due to the fact that the tunneling tunnel rack mass state of the TBM cannot be effectively reflected in real time through existing means. By collecting hard-rock tunnel TBM tunneling parameters and corresponding rock mass state parameter data, a data storehouse module is built; step-by-step regression is adopted, a rock-machine relationship sensing model is built, and a clustering algorithm is adopted to achieve rock mass quality grading and form a calculation module kernel; in a model calculation module, by reading current tunneling parameters of the TBM in a tunneling project, back calculation is conducted to obtain rock mass state information, and the rock mass state information is displayed on a TBM upper computer visible interface in a real-time output and display module inreal time. By means of the system and method, the deficiencies of difficult obtaining of traditional rock mass condition parameters, backward means and unknown rock mass state in front of the tunnelface are made up for; energy consumption of the TBM is reduced, the equipment and personnel safety is guaranteed, the tunneling efficiency of the TBM is improved, and the safe efficient tunneling capability of the TBM is greatly improved.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD +1

Multi-punch pin special push pipe

The invention relates to a multi-punch pin special push pipe of push pipe construction machinery, which includes a casing of the special push pipe, a muddy water bin on the left side and a working chamber on the right side, wherein a hydraulic oil cylinder A and a hydraulic Oil cylinder B are both arranged in the working chamber, other excavating mechanisms are all arranged in the muddy water bin, the working chamber and the muddy water bin are separated by a bin separation board, an output shaft A at the left end of the hydraulic oil cylinder A is connected with a connecting rod A, the left end of the connecting rod A is provided with a plurality of drill rods A, an output shaft at the left end of the hydraulic oil cylinder B is connected with a connecting rod B, the left end of the connecting rod B is provided with a plurality of drill rods B, the drill rods A and the drill rods B are arranged at intervals, left ends of both the drill rods A and the drill rods B are provided with punch pins, two stopping blocks are arranged on each punch pin, two wing plates are arranged on the right end of each stopping block, and one ends of every two wing plates are hinged onto the corresponding drill rod through a hinged shaft. According to the invention, the plurality of punch pins A and the plurality of punch pins B are arranged at intervals, so that push pipes in various shapes can be formed.
Owner:南通硕伦实业有限公司

Testing method for laying ballastless tracks in early stage before overall completion of super long tunnel

ActiveCN102174893ASmall penetration errorImprove construction measurement accuracyHeight/levelling measurementTunnelsMathematical modelCurve fitting
The invention relates to a testing method for laying ballastless tracks in the early stage before overall completion of a super long tunnel. In the traditional tunnel construction method, a tunnel is dug in two directions both from the left cave and the right cave; and tracks are laid after the tunnel is finished; and the traditional construction method has the disadvantages of low construction progress, long construction period, low efficiency and risks of potential safety hazards. In the invention, multiple inclined shafts are arranged along the direction of a main cave; with the inclined shafts as a boundaries, the main cave construction is carried out in two directions by sections and the ballastless tracks are laid before the cave is dug through; a horizontal control network and a vertical control network are established to carry out measurement and data acquisition, the mathematical model of curve fitting is used to carry out centerline fitting so as to confirm the deviation between a through centerline and a theoretical centerline and carry out assessment to determine theoretical position of the centerline of sections dug through latterly; tracks of the through sections arelaid according to the fitted centerline, the sections under construction are measured and guided according to the fitted centerline to ensure that the centerline of the sections dug through latterly is consistent to the centerline of the sections with tracks laid. The method greatly accelerates construction progress and ensures smoothness and collinearity of the tracks laid in the early stage.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP

Tool pan back-loading type device for changing tool of slurry-balanced shield machine under normal pressure

InactiveCN102322271ATunnelsTool bitEngineering
The invention relates to a tool pan back-loading type device for changing a tool of a slurry-balanced shield machine under normal pressure, which is applied to the technical field of shield machine engineering machinery. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure comprises a tool bit, a first seal ring, a tool post, a tool bit fixing sleeve, a tool bit fixing bolt, a tool bar, a cylindrical gate, a grease injection valve, a flushing valve, a third seal ring, a fourth seal ring, a bearing, a large end cover, an oil cylinder and the like; when the tool is in the working state, the tool bit is fixed on the tool bar through the tool bit fixing sleeve and the tool bit fixing bolt; the first seal ring is mounted at thefront end of the tool bar, and the tool bar is matched with the front end of the tool post and is sealed through the first seal ring; the tool bar is fixed on the tool post by the rear end of the tool bar and the tool post through a first fixing screw; the cylindrical gate is fixed on the tool post through the bearing and the large end cover; the grease injection valve and the flushing valve are installed on the tool post; and a serial number is arranged between the cylindrical gate and the tool post. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure has the advantages of simple structure, reliable working, and capability of conveniently and quickly changing a worn tool under normal pressure (atmospheric pressure) in the shield construction process.
Owner:SHENYANG HEAVY MACHINERY GROUP

Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction

The invention belongs to the field of tunneling in geotechnical engineering and underground engineering, and particularly relates to a centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction. The testing device mainly comprises a model box, a small displacement meter bracket, a big displacement meter bracket, a tunnel excavation device, a linear variable differential transformer (LVDT) displacement meter and the like, wherein the model box is a hollow cuboid; the small displacement meter bracket and the big displacement meter bracket adjust the LVDT displacement meter along the horizontal direction and the vertical direction, so that the surface subsidence and the soil layer deformation can be measured; and the tunnel excavation device can simulate the soil body deformation caused by stratum loss by discharging a certain volume of water. Through the device, the deformation influence of the city shield tunnel construction on surrounding soil layer can be more conveniently, really and effectively simulated, so more real and accurate experimental data can be provided for tunnel design and construction, and high efficiency and safety of the city shield tunnel construction are guaranteed.
Owner:SHANGHAI UNIV

Support-type comprehensive tunneler

ActiveCN102022122AOvercome the disadvantages of not being able to drill holes and support at the same timeIncrease the speed of excavationMine roof supportsTunnelsEngineeringMetal mesh
The invention relates to a support-type comprehensive tunneler which comprises a non-tracked tunneler, a tunneler chassis, a left hydraulic support, a right hydraulic support, a drilling rig and scraper conveyors, wherein the tunneler is arranged on the tunneler chassis, and two advancing jacks are arranged on the tunneler chassis; the other ends of the two advancing jacks are respectively connected with the left hydraulic support and the right hydraulic support, and the two sides of the tunneler chassis are respectively provided with a lateral pushing oil cylinder; forestopes of the left andright hydraulic supports are respectively provided with a group of metal mesh storages, and the tail of a main top beam of the support is hung with the drilling rig; the tail of a first scraper conveyor is arranged on a spade plate of the tunneler, and the head of the first scraper conveyor and the tail of a second scraper conveyor are overlapped; and the head of the second scraper conveyor and the tail of a belt loader are overlapped, and sleds are arranged at the back of the two hydraulic supports. The tunneler has the advantage that the drilling support and the coal cutting of the tunnelerare simultaneously carried out, and also has the automatic lapping function, thus reducing labor intensity and increasing the coal mining efficiency by over 4 times.
Owner:DATONG COAL MINE GRP CO LTD HENGAN EQUIP CO LTD

Hard rock tunnel boring machine (TBM) boring control parameter intelligent decision method and system

ActiveCN107632523ASafe, efficient and stable excavationTunnelsAdaptive controlDecision modelState parameter
The present invention provides a hard rock TBM boring control parameter intelligent decision method and system. The method comprises the establishment of an engineering database, the establishment ofa rock-machine mutual feedback model and an intelligent control decision model based on the engineering database, the model parameter output, display and updating, an automatic/manual boring parametercontrol method and a model self-learning and self-updating algorithm, and the system comprises an engineering database unit, a rock-machine mutual feedback model unit, an intelligent control decisionmodel unit, a model parameter output real-time display module, an automatic/manual boring parameter control module, and a model self-learning and self-updating unit. According to the present invention, the rock-machine mutual feedback model predicts the state parameter of a current surrounding rock and senses the boring environment of a TBM real-timely according to the operation parameters of theequipment, the intelligent control decision model predicts an optimal control boring parameter according to the current boring environment, and adjusts the current boring parameter timely according to the control boring parameter to adapt to the current boring environment, thereby keeping the safe, efficient and stable boring.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Shield tunneling machine for tunnel connecting passageway and connecting passageway tunneling method of shield tunneling machine

The invention belongs to the technical field of tunnel construction equipment, and relates to a shield tunneling machine for a tunnel connecting passageway and a connecting passageway tunneling method of the shield tunneling machine. The shield tunneling machine comprises a start end supporting walking platform and a receiving end supporting walking platform which are respectively arranged on material transportation rails in two main tunnels, a shield tunneling machine main unit, a counterforce supporting frame and a main tunnel supporting assembly which are respectively arranged on the start end supporting walking platform and a corresponding main tunnel duct piece, and a start end socket sealing assembly and a receiving end socket sealing assembly which are respectively arranged at the start end and the receiving end of the connecting passageway, wherein a duct piece hanging assembly is arranged on the start end supporting walking platform; a jacking tunneling assembly is arranged between the counterforce supporting frame and the shield tunneling machine main unit. The shield tunneling machine can realize automatically mechanical excavation; the labor intensity is greatly reduced, the energy consumption is reduced, and the cost is reduced; meanwhile, equipment construction is stable, and the efficiency is high; settling of the ground is effectively controlled, and the construction risk is reduced.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Construction method for connection passage by double-row hole horizontal freezing method

The invention relates to a construction method of a connecting channel by a double-row hole horizontal freezing method. The method comprises the following steps: freezing parameters are defined; frozen holes are arranged and drilled; a freezing system is mounted and operated; the connecting channel is constructed and excavated; injected slurry is unfrozen and thawed initiatively, artificially and compulsively combining construction monitoring and natural unfreezing; in the method, at the time of natural unfreezing, hot brine circulates in the frozen holes, frozen soil is unfrozen compulsively in means of area separation, and the unfreezing is carried out from down to up; thaw settlement grouting is carried out by a pre-buried injection pipe, and the grouting is carried out from down to up; the frozen holes are arranged in a row of outer holes and a row of inner holes; the length of the holes is subject to the length reaching a side duct piece, the way of holing on the two sides is applied; the connecting channel is excavated in the way of dynamic excavation, namely the heading and constructing of two main tunnels are operated simultaneously. The method efficiently controls the stability of the mouth of a cave in the process of excavation and the sedimentation of the connecting channel and the two main tunnels, and has the advantage of saving the construction period, therefore, the method is applicable for the freezing construction of the connecting channel of various soft soil layers.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD.

Comprehensive dredging machine

ActiveCN102155219AOvercome the disadvantages of not being able to drill holes and support at the same timeIncrease the speed of excavationMine roof supportsTunnelsPush and pullEngineering
The invention discloses a comprehensive dredging machine. The comprehensive dredging machine comprises a crawler-free type dredging machine, a hydraulic support, a drilling machine, a scraper conveyor, a runner and the like. The upper end of the hydraulic support is provided with a main top beam, a front canopy, a back canopy and a cross beam; the dredging machine is arranged on a foundation; thefront and rear ends of the foundation are provided with a slope regulation jack respectively; one end of a front pushing and pulling jack is connected with the foundation of the dredging machine, andthe other end of the front pushing and pulling jack is connected with the hydraulic support; the rear of the dredging machine is provided with a self-advancing jack, and two sides of the foundation are provided with a side push cylinder respectively; and the drilling machine is arranged below the main top beam or the back canopy; and the runner is arranged behind the hydraulic support and is connected with a rear push and pull jack arranged on the hydraulic support by an anchor chain and a pulley. The comprehensive dredging machine has the advantages of parallel operation of hole drilling andsupporting, and coal cutting of a development machine, a roadway turns flexibly, the turning radius is small, the turning speed is high, the tunneling speed is high, and the safety is guaranteed.
Owner:DATONG COAL MINE GRP CO LTD HENGAN EQUIP CO LTD

Waist-form tunnel boring machine

Disclosed is a waist-form tunnel boring machine. A first impact cutter bar is arranged on the upper portions of a first spindle and a second spindle, a first square shaft and a second square shaft are fixed on the right of the first impact cutter bar, the right end of the first square shaft and the right end of the second square shaft are fixed at the front end and the rear end of a first rectangular plate respectively, the middle of the first rectangular plate is provided with a rectangular hole, a first pin shaft is inserted into the rectangular hole, the lower end of the first pin shaft is fixed on the radius of a first wheel, the circular center of the first wheel is fixed on a first auxiliary shaft, and a second pin shaft is inserted into the other end of the rectangular hole. A second impact cutter bar is arranged on the lower portions of the first spindle and the second spindle, a third square shaft and a fourth square shaft are fixed on the right of the second impact cutter bar, the right end of the third square shaft and the right end of the fourth square shaft are fixed at the front end and the right end of a second rectangular plate respectively, the second rectangular plate is provided with a rectangular hole in the middle, a third pin shaft is inserted into the rectangular hole and fixed on the radius of a third wheel, the circular center of the third wheel is fixed on a third auxiliary shaft, and a fourth pin shaft is inserted into the other end of the rectangular hole.
Owner:永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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